diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5b3e0e2..76c8cf9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,10 +24,8 @@ jobs:
       uses: actions/setup-dotnet@v2
       with:
         dotnet-version: |
-          2.1.x
-          3.1.x
-          5.0.x
           6.0.x
+          7.0.x
 
     - name: Find MSBuild
       if: startsWith(matrix.os, 'windows')